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Finding the Fourth Proportional to 74,960.64, 103,472.64 and 45,169.92

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Solution

The fourth proportional to 74,960.64, 103,472.64 and 45,169.92 is: 62,350.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,960.64 : 103,472.64 = 45,169.92 : x
  2. Step 2: Convert to fraction form
    74,960.64/103,472.64 = 45,169.92/x
  3. Step 3: Cross multiply
    74,960.64x = 103,472.64 × 45,169.92
  4. Step 4: Simplify right side
    74,960.64x = 4,673,850,870.99
  5. Step 5: Solve for x
    x = 4,673,850,870.99/74,960.64
  6. Step 6: Final answer
    x = 62,350.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.